VLC_EXPORT( char *, str_format, ( vlc_object_t *, const char * ) );
#define str_format( a, b ) str_format( VLC_OBJECT( a ), b )
VLC_EXPORT( char *, str_format, ( vlc_object_t *, const char * ) );
#define str_format( a, b ) str_format( VLC_OBJECT( a ), b )